Half the number of n X n binary matrices differing in at most one position between adjacent rows and at most one position between adjacent columns.
A140336
Half the number of n X n binary matrices differing in at most one position between adjacent rows and at most one position between adjacent columns.
Terms
- a(0) =1a(1) =5a(2) =16a(3) =47a(4) =138a(5) =419a(6) =1358a(7) =4615a(8) =16562a(9) =61879a(10) =240506a(11) =967043a(12) =4011246a(13) =17127819a(14) =75094742
External references
- oeis: A140336